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A method for simulating interfacial mass transfer on arbitrary meshes

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Title: A method for simulating interfacial mass transfer on arbitrary meshes
Authors: Giustini, G
Issa, R
Item Type: Journal Article
Abstract: This paper presents a method for modelling interfacial mass transfer in Interface Capturing simulations of two-phase flow with phase change. The model enables mechanistic prediction of the local rate of phase change at the vapour-liquid interface on arbitrary computational meshes and is applicable to realistic cases involving two-phase mixtures with large density ratios. The simulation methodology is based on the Volume Of Fluid (VOF) representation of the flow, whereby an interfacial region in which mass transfer occurs is implicitly identified by a phase indicator, in this case the volume fraction of liquid, which varies from the value pertaining to the ‘bulk’ liquid to the value of the bulk vapour. The novel methodology proposed here has been implemented using the Finite Volume framework and solution methods typical of ‘industrial’ Computational Fluid Dynamics (CFD) practice. The proposed methodology for capturing mass transfer is applicable to arbitrary meshes without the need to introduce elaborate but artificial smearing of the mass transfer term as is often done in other techniques. The method has been validated via comparison with analytical solutions for planar interface evaporation and bubble growth test cases, and against experimental observations of steam bubble growth.
Issue Date: 3-Aug-2021
Date of Acceptance: 14-Jul-2021
URI: http://hdl.handle.net/10044/1/90657
DOI: 10.1063/5.0058987
ISSN: 1070-6631
Publisher: American Institute of Physics
Journal / Book Title: Physics of Fluids
Volume: 33
Issue: 8
Copyright Statement: © 2021 Author(s). Published under an exclusive license by AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Physics of Fluids and may be found at https://aip.scitation.org/doi/10.1063/5.0058987
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/T027061/1
Keywords: Fluids & Plasmas
01 Mathematical Sciences
02 Physical Sciences
09 Engineering
Publication Status: Published
Article Number: ARTN 087102
Online Publication Date: 2021-08-03
Appears in Collections:Mechanical Engineering
Faculty of Engineering